packer-cn/builder/triton/access_config.go

100 lines
2.5 KiB
Go

package triton
import (
"fmt"
"io/ioutil"
"log"
"os"
"github.com/joyent/gocommon/client"
"github.com/joyent/gosdc/cloudapi"
"github.com/joyent/gosign/auth"
"github.com/mitchellh/packer/helper/communicator"
"github.com/mitchellh/packer/template/interpolate"
)
// AccessConfig is for common configuration related to Triton access
type AccessConfig struct {
Endpoint string `mapstructure:"triton_url"`
Account string `mapstructure:"triton_account"`
KeyID string `mapstructure:"triton_key_id"`
KeyMaterial string `mapstructure:"triton_key_material"`
}
// Prepare performs basic validation on the AccessConfig
func (c *AccessConfig) Prepare(ctx *interpolate.Context) []error {
var errs []error
if c.Endpoint == "" {
// Use Joyent public cloud as the default endpoint if none is in environment
c.Endpoint = "https://us-east-1.api.joyent.com"
}
if c.Account == "" {
errs = append(errs, fmt.Errorf("triton_account is required to use the triton builder"))
}
if c.KeyID == "" {
errs = append(errs, fmt.Errorf("triton_key_id is required to use the triton builder"))
}
var err error
c.KeyMaterial, err = processKeyMaterial(c.KeyMaterial)
if c.KeyMaterial == "" || err != nil {
errs = append(errs, fmt.Errorf("valid triton_key_material is required to use the triton builder"))
}
if len(errs) > 0 {
return errs
}
return nil
}
// CreateTritonClient returns an SDC client configured with the appropriate client credentials
// or an error if creating the client fails.
func (c *AccessConfig) CreateTritonClient() (*cloudapi.Client, error) {
keyData, err := processKeyMaterial(c.KeyMaterial)
if err != nil {
return nil, err
}
userauth, err := auth.NewAuth(c.Account, keyData, "rsa-sha256")
if err != nil {
return nil, err
}
creds := &auth.Credentials{
UserAuthentication: userauth,
SdcKeyId: c.KeyID,
SdcEndpoint: auth.Endpoint{URL: c.Endpoint},
}
return cloudapi.New(client.NewClient(
c.Endpoint,
cloudapi.DefaultAPIVersion,
creds,
log.New(os.Stdout, "", log.Flags()),
)), nil
}
func (c *AccessConfig) Comm() communicator.Config {
return communicator.Config{}
}
func processKeyMaterial(keyMaterial string) (string, error) {
// Check for keyMaterial being a file path
if _, err := os.Stat(keyMaterial); err != nil {
// Not a valid file. Assume that keyMaterial is the key data
return keyMaterial, nil
}
b, err := ioutil.ReadFile(keyMaterial)
if err != nil {
return "", fmt.Errorf("Error reading key_material from path '%s': %s",
keyMaterial, err)
}
return string(b), nil
}